CN213579391U - Non-magnetic sensor - Google Patents

Abstract

The utility model discloses a no magnetism sensor, it includes: a housing; a PCB mounted within the housing; a metal half disc is arranged on one side of the top surface of the rotary disc, a connecting flange is arranged on the bottom surface of the rotary disc, a plurality of through grooves are formed in the connecting flange, and the rotary disc is arranged in the shell; the side wall of the rotating ring is provided with a plurality of inserting holes, and the rotating ring is installed on the connecting flange; the pressing piece is sleeved with a spring and is slidably mounted in the insertion hole; a compression ring mounted on the connection flange; the sensor is conveniently and quickly fixedly mounted on the rotating shaft, and is convenient to adjust and stable and firm to connect.

Description

Non-magnetic sensor

Technical Field

The utility model relates to the sensor field especially involves a no magnetism sensor.

Background

Along with the continuous development of sensor technology and the continuous widening of application fields in recent years, more and more measurement methods for energy metering are provided, and a non-magnetic sensor is an advanced sensor, wherein a plurality of LC oscillating circuits are used for acquiring information under different damping conditions (such as plastics and metals) by means of different damping speeds of damping oscillation (when an impeller rotates, a scanning module provides pulses for the LC oscillating circuits, the LC oscillating circuits can generate damping oscillation, when inductors of the LC oscillating circuits are located above a plastic surface, the waveforms of the LC oscillating circuits are damped slowly, and when the inductors of the LC oscillating circuits are located above a metal surface, the waveforms of the LC oscillating circuits are damped quickly).

In order to save cost and avoid waste, part of metering equipment can be modified and added with a nonmagnetic sensor and a matched control mainboard. However, the specifications of impeller shafts of old mechanical meters or meters of other systems are different, and in order to reduce the weight of the sensor and the load of the mechanical impeller, the distance between the meter and the sensor is very small, so that the sensor is very troublesome to mount and connect, and the stability of the fixed connection is poor; and simultaneously, the distance between the PCB and the turntable is not convenient to adjust.

Accordingly, there is a need for a fast assembling nonmagnetic sensor that addresses one or more of the above problems.

SUMMERY OF THE UTILITY MODEL

For solving one or more problems that exist among the prior art, the utility model provides a no magnetism sensor. The utility model discloses a solve the technical scheme that above-mentioned problem adopted and be: a non-magnetic sensor, comprising: the mounting structure comprises a shell, a first flange and a second flange, wherein the shell is provided with a mounting cavity, the inner side wall of the shell is provided with the first flange, and the inner side wall of the lower end part of the shell is provided with the second flange;

the PCB is provided with a coil probe on the bottom surface, an LC oscillating circuit and a micro-control unit are integrated in the PCB, and the PCB is installed in the shell and limited by the first flange;

the rotary table is arranged in the shell and limited by the second flange;

the side wall of the rotating ring is provided with a plurality of inserting holes, the rotating ring is installed on the connecting flange, and the inserting holes are matched with the through grooves;

the front end part of the pressing piece is a pressing end part, a spring is sleeved behind the pressing end part, the pressing piece is slidably mounted in the insertion hole, and when the pressing end part abuts against the outer side wall of the connecting flange, the spring is compressed;

the compression ring is fixedly arranged on the connecting flange and limits the up-and-down movement of the rotating ring;

through the compressing piece and the external rotating shaft are fixedly connected, the rotary table is hoisted in the shell and rotates.

Furthermore, the micro control unit is arranged on the top surface of the PCB, and the top surface of the PCB is also provided with welding contacts for electric connection.

Further, the insertion holes are arranged in a circumferential array and at least three are provided.

Furthermore, the through groove limits the pressing end part to move left and right, and the through groove and the pressing end part are rectangular.

Further, still include: the front cover is provided with a wire hole and is fixedly installed at the upper end of the shell and covers the PCB.

The utility model has the advantages that the shell, the PCB, the rotary disc, the rotary ring, the pressing piece and other parts are connected together through an ingenious structure, so that the sensor can be quickly installed on a mechanical rotating shaft of a metering instrument, and the distance between the sensor and the mechanical rotating shaft is reduced and the connection is firm and stable; the utility model discloses a practical value has greatly improved above.

Drawings

FIG. 1 is a perspective view of a non-magnetic sensor of the present invention;

FIG. 2 is an exploded view of a non-magnetic sensor according to the present invention;

FIG. 3 is a partial exploded view of a non-magnetic sensor according to the present invention;

fig. 4 is a top view of a non-magnetic sensor of the present invention;

fig. 5 is a cross-sectional view along the direction of a-a of a top view of a non-magnetic sensor according to the present invention.

[ reference numerals ]

101. outer shell

102. installation cavity

103. first flange

104. second flange

105. connecting groove

110. front cover

111. line hole

120 slider

130. adjusting screw

201···PCB

202. welding contact

203. micro control unit

204. coil Probe

301. turntable

302. metal half disc

303. balance weight

310. connecting flange

311. through groove

401. swivel

402. inner bore

403. insert hole

410. pressing member

411. pinch end

412. spring

501. pressure ring.

Detailed Description

In order to make the above objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the invention.

As shown in fig. 1-5, the utility model discloses a no magnetism sensor, it includes: it includes: a housing 101, wherein the housing 101 is provided with a mounting cavity 102, a plurality of connecting grooves 105 are arranged on the side wall of the housing 101, and a second flange 104 is arranged on the inner side wall of the lower end part of the housing 101;

the PCB201, there is a coil probe 204 on the bottom surface of the PCB201, there are LC oscillating circuit and little control unit 203 integrated in the said PCB201, the said PCB201 is installed in the said outer casing 101;

a slide 120, wherein the top surface of the slide 120 is provided with a slope, the slide 120 is slidably installed in the connecting groove 105, and the top surface of the slope is abutted against the bottom surface of the PCB 201;

an adjusting screw 130, wherein the adjusting screw 130 is screwed on the connecting groove 105 and is arranged outside the outer shell 101, an end of the adjusting screw 130 is abutted against the slider 120, and the adjusting screw 130 adjusts the movement of the slider 120;

a metal half disc 302 is arranged on one side of the top surface of the rotary disc 301, a balance weight 303 is arranged on the other side of the top surface of the rotary disc 301, a connecting flange 310 is arranged on the bottom surface of the rotary disc 301, a plurality of through grooves 311 are arranged on the connecting flange 310, and the rotary disc 301 is arranged in the shell 101 and limited by the second flange 104;

a swivel 401, a plurality of insertion holes 403 being provided on a sidewall of the swivel 401, the swivel 401 being mounted on the connection flange 310, the insertion holes 403 being engaged with the through slots 311;

a pressing member 410, a pressing end 411 is arranged at the front end of the pressing member 410, a spring 412 is sleeved behind the pressing end 411, the pressing member 410 is slidably mounted in the insertion hole 403, and when the pressing end 411 abuts against the outer side wall of the connecting flange 310, the spring 412 is compressed;

the pressing ring 501 is fixedly arranged on the connecting flange 310 and limits the up-and-down movement of the rotating ring 401;

the pressing piece 410 is fixedly connected with an external rotating shaft, so that the turntable 301 is hoisted in the shell 101 and rotates;

as shown in fig. 5, a first flange 103 is disposed on an inner side wall of the outer casing 101, the first flange 103 is disposed at a lower side of the connecting groove 105, the PCB201 abuts against the first flange 103 when the slider 120 is retracted, or the PCB201 abuts directly against the first flange 103 for limiting.

Note that, the weight 303 functions to: the center of gravity of the turntable 301 is moved to a position close to the axial center thereof. The phenomenon that the turntable 301 is unbalanced to the horizontal plane due to the fact that the center of gravity is not on the axis in long-term use, so that the turntable 301 is tangent to the surfaces of other parts and damage is caused is avoided. Generally, the weight 303 is removable, and the weight 303 is generally made of a non-metallic material, such as plastic, ceramic, glass, and the like.

It should be noted that the metal half disc 302 is semicircular and occupies half of the surface of the turntable 301; in the rotating process of the turntable 301, the coil probes 204 arranged on the PCB201 can be shielded by the turntable 301.

The turntable 301 is typically made of a non-metallic material, such as plastic, with half the surface of the plastic and half the surface of the metal half disc 302. When the coil probe 204 is shielded by the metal half disc 302 in the rotation process, the waveform output by the LC oscillating circuit is attenuated more quickly, and when the coil probe is shielded by one half of the plastic of the turntable 301, the waveform output by the LC oscillating circuit is attenuated normally, so that the rotation number and the angle of the turntable 301 are detected, and calculation, control, output and the like are performed through the micro control unit 203. The PCB201 may also be generally provided with conventional circuits such as a detection filter circuit, a voltage regulator circuit, etc., and the PCB201 and the circuits thereon are conventional metal damping detection circuits and structures, which are not described herein in detail.

It should be noted that the inclination angle of the slope on the slider 120 is generally 30 ° or less than 30 ° to facilitate the adjustment of the pitch; during use, the slider 120 can also abut against the turntable 301 to prevent the turntable 301 from colliding with the PCB 201. The compression end 411 is typically provided with a friction groove and may also be provided with a plastic or silicone layer to better compress or clamp the spindle of the metrology tool. The second flange 104 is mainly used for limiting the turntable 301.

Specifically, as shown in fig. 2 and 3, the micro control unit 203 is disposed on a top surface of the PCB201, and the top surface of the PCB201 is further provided with a soldering contact 202 for electrical connection, so as to facilitate connection with an external circuit. The connecting grooves 105 are arranged in a circumferential array and are provided with at least three connecting grooves, the inserting holes 403 are arranged in a circumferential array and are provided with at least three connecting grooves, the number of the connecting grooves is generally three, the end faces of the PCBs 201 are balanced as well as possible under the condition that the number of the opening holes is reduced, and the clamping force of the pressing pieces 410 to the rotating shaft of the metering instrument is enough. Generally, the through slot 311 limits the left and right movement of the pressing end 411, and the through slot 311 and the pressing end 411 are rectangular in shape.

Specifically, as shown in fig. 2 and 5, the method further includes: the front cover 110 is provided with a wire hole 111, the front cover 110 is fixedly installed at the upper end of the casing 101 and covers the PCB201, the front cover is connected with an external circuit through the wire hole 111, and the lower end surface of the casing 101 is tightly attached to the surface of the measuring instrument when being installed.

The utility model discloses when using, through rotating carousel 301 for set up on it connection flange 310 rotates, at this moment in the patchhole 403 compress tightly piece 410 and be in pass under the effect of spring 412 lead to groove 311 and enter into the hole of swivel 401, the array sets up a plurality ofly compress tightly piece 410 compress tightly tip 411 and support in the pivot of measuring instrument to compress tightly or the chucking, realize fixed connection. Generally, the housing 101 is very close to the surface of the measuring instrument in practical use, and it is very troublesome to fixedly connect the turntable 301 with the rotating shaft of the measuring instrument (without disassembling and assembling lovers), and the distance between the two or the volume of the housing cannot be increased, and the clamping or pressing by the pressing member 410 can solve this function well.

Furthermore, the distance between the turntable 301 and the PCB201 needs to be adjusted during general use, and at this time, the PCB201 can be jacked up by rotating the adjusting screws 130 arranged in the peripheral array and the slider 120, so that the distance is adjusted, the use is more convenient, the structure is simple, and the overall volume is not increased. Compared with a common sleeve type or motor type, the motor type motor is smaller in size and simpler in structure. The utility model discloses well calculation, measuring method and the relevant circuit of the class sine wave attenuation curve that metal damping caused are prior art.

To sum up, the utility model, by connecting the housing 101, the PCB201, the turntable 301, the swivel 401, the pressing member 410 and other components together through an ingenious structure, realizes that the sensor can be quickly installed on the mechanical rotating shaft of the measuring instrument, and simultaneously reduces the distance between the sensor and the mechanical rotating shaft and has firm and stable connection; the utility model discloses a practical value has greatly improved above.

The above-described embodiments merely represent one or more embodiments of the present invention, which are described in detail and concrete, but are not to be construed as limiting the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (5)

1. A non-magnetic sensor, comprising: the mounting structure comprises a shell, a first flange and a second flange, wherein the shell is provided with a mounting cavity, the inner side wall of the shell is provided with the first flange, and the inner side wall of the lower end part of the shell is provided with the second flange;

the PCB is provided with a coil probe on the bottom surface, an LC oscillating circuit and a micro-control unit are integrated in the PCB, and the PCB is installed in the shell and limited by the first flange;

the rotary table is arranged in the shell and limited by the second flange;

the side wall of the rotating ring is provided with a plurality of inserting holes, the rotating ring is installed on the connecting flange, and the inserting holes are matched with the through grooves;

the front end part of the pressing piece is a pressing end part, a spring is sleeved behind the pressing end part, the pressing piece is slidably mounted in the insertion hole, and when the pressing end part abuts against the outer side wall of the connecting flange, the spring is compressed;

the compression ring is fixedly arranged on the connecting flange and limits the up-and-down movement of the rotating ring;

through the compressing piece and the external rotating shaft are fixedly connected, the rotary table is hoisted in the shell and rotates.

2. The non-magnetic sensor of claim 1, wherein the micro-control unit is disposed on a top surface of the PCB, and the top surface of the PCB is further provided with solder contacts for electrical connection.

3. A non-magnetic sensor according to claim 1, wherein the insertion holes are arranged in a circumferential array and at least three are provided.

4. The non-magnetic sensor of claim 1, wherein the channel limits side-to-side movement of the clamping end, and the channel and the clamping end are rectangular in shape.

5. A non-magnetic sensor according to claim 1, further comprising: the front cover is provided with a wire hole and is fixedly installed at the upper end of the shell and covers the PCB.

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